In reading the tutorial for doing a repair installation of Vista I read that if SP1 had been installed that a "slipstream" disk with SP1 had to be used. Can you not use the OEM disk to do a repair and take it back to the original installation and then update to SP1. I don't want to lose any data that had previously been on the hard drive. I cannot get it to boot now with any of the options such as "start up repair" and Bootrec.exe.